Introducing GPT-5.1 Codex
We're excited to announce that ChatBotKit now supports the GPT-5.1 Codex model, an enhanced version of our GPT-5 Codex offering that brings significant improvements for software engineering and coding workflows.
GPT-5.1 Codex builds upon the strong foundation of GPT-5 Codex with enhanced capabilities specifically designed for both interactive development sessions and long, independent execution of complex engineering tasks. This advanced model is part of the GPT-5 family and inherits its powerful reasoning capabilities while being specifically tuned for coding applications.
What's New in GPT-5.1 Codex
This upgraded model brings several key improvements:
- Expanded Context Window: With a massive 400,000 token context window, GPT-5.1 Codex can handle substantially larger codebases and more complex development tasks than its predecessor
- Enhanced Reasoning: Advanced reasoning capabilities specifically optimized for software engineering challenges
- Improved Performance: Better handling of multi-step coding projects and complex architectural decisions
- Function Calling Support: Native integration with tools and APIs for more powerful development workflows
Ideal Use Cases
GPT-5.1 Codex excels at:
- Large Codebase Navigation: Understanding and working with extensive projects thanks to its expanded context window
- Complex Refactoring Tasks: Handling sophisticated code transformations across multiple files
- Architecture Planning: Designing and documenting complex system architectures
- Code Review and Analysis: Comprehensive code audits with deep contextual understanding
- Technical Documentation: Creating detailed, accurate documentation for complex systems
- Development Workflow Automation: Building intelligent coding assistants and automation tools
Getting Started with GPT-5.1 Codex
To start using GPT-5.1 Codex in your bots:
- Navigate to your bot configuration
- Select "gpt-5.1-codex" from the model dropdown
- Configure your preferences and settings
- Save your changes and begin leveraging the enhanced capabilities
GPT-5.1 Codex is available now to all ChatBotKit users and can be accessed wherever code generation or code understanding models are supported across the platform.
For more detailed information about GPT-5.1 Codex and our complete model lineup, please refer to our Models documentation.
We're excited to see how you leverage these enhanced capabilities to build even more powerful coding assistants and development tools!